Canada could transition to full renewables by 2050, expert tells youth climate trial

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Combine that with the electrification of energy and transportation and “Canada can do it,” Jacobson said of transitioning to renewables.

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“Whether it actually does it by 2050 is more of a social and political question.”

Jacobson is a witness for 15 young plaintiffs in the trial underway in Federal Court in Vancouver, where they are arguing that federal legislation violates their constitutional rights by continuing Canada’s trajectory of greenhouse gas emissions.

Electricity is significantly more efficient than combustion, Jacobson said.

“By electrifying everything and providing that electricity from renewables, you use a huge amount less energy. In Canada, it’s like 60 per cent less energy,” he said.

“There’s no more combustion, so you eliminate the air pollutants, you eliminate the global warming emissions.”

Shifting to renewable energy would help avert deaths and cut the health costs associated with fossil fuels, Jacobson told the hearing.

He said an estimated 6,900 people die each year from air pollution in Canada.

The plaintiffs’ lawyer, Catherine Boies Parker, told the court in her opening statement the case was not about the existence of climate change.

Rather, it hinges on whether the government is “constitutionally required to stop making it worse,” she said.

“The plaintiffs are asking this court to hold Canada legally accountable for its role in continuing and worsening the climate crisis that is causing harm.”

This report by The Canadian Press was first published Oct. 29, 2026.

Brenna Owen, The Canadian Press